Plasma cassette etcher



FIG. 1 is a front perspective view of a plasma cassette etcher showing our new design;

FIG. 2 is a front elevational view of the plasma cassette etcher shown in FIG. 1;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof, looking toward the left side thereof as it is shown in FIGS. 1 and 2; and

FIG. 7 is a right side elevational view thereof, looking toward the right side thereof as it is shown in FIGS. 1 and 2. 

The ornamental design for a plasma cassette etcher, substantially as shown and described. 